Vulnerability Description
The The Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 11.2.7. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. The submission nonce is dispensed to any unauthenticated caller by the public wp_ajax_nopriv_qsm_create_quiz_nonce endpoint, meaning it functions as a CSRF token rather than an authorization barrier and imposes no meaningful obstacle to exploitation.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.2.7/php/clas
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.2.7/php/clas
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.2.7/php/clas
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.2.7/renderer
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3729156%40quiz-master
- https://www.wordfence.com/threat-intel/vulnerabilities/id/020209b3-2175-4509-836
FAQ
What is CVE-2026-103917?
CVE-2026-103917 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The The Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 11.2.7. This is due to the so...
How severe is CVE-2026-103917?
CVE-2026-103917 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-103917?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.